roll of yellow unfaced insulation on a blue background

Unfaced Fiberglass

Unfaced Metal Building Insulation (MBI) is a resilient, flexible fiberglass blanket. Unfaced MBI is used to provide additional layers of insulation in systems to achieve higher R-values as well as to fill the purlin cavity of liner systems.

Bay Insulation offers both NAIMA 202-96® unfaced MBI as well as Metal Building Filler Blanket, depending on the needs of our customers. For more information on Filler Blanket, see Bay Insulation Systems’ Stance on Filler Blanket.

R-103.0″36″ 48″, 60″, 72″100′
R-113.5″36″ 48″, 60″, 72″100′
R-134.0″36″ 48″, 60″, 72″75′
R-165.0″36″ 48″, 72″50′
R-196.0″36″ 48″, 60″, 72″50′
R-258.0″48″, 60″, 72″40′
R-309.0″48″, 60″, 72″25′
*Special order item: Minimum order quantities may apply.
**Custom widths also available.

Looking to discuss your project or insulation needs with someone well-versed in the specialty?